How to add branch? to a friend's warehouse in the form of pull requests

I downloaded master
from fork + clone and then created a branch via master . What should I do to submit this branch directly to my friend"s warehouse, and master can I switch branches by switch branches/tags on github ?
instead of overwriting the master branch?

Pull-request github git
Mar.10,2021

create pull request in a friend's warehouse, submit the branch you want to submit, and then let the friend handle it

.

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b36748-343c5.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b36748-343c5.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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